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    Question

    Cost of a gadget is Rs. (10n + 150). It is marked up by

    60% and sold after deducting Rs. (5n + 100) as discount. If a profit of Rs. 1,200 is made, find the value of 'n'.
    A 1210 Correct Answer Incorrect Answer
    B 1260 Correct Answer Incorrect Answer
    C 1300 Correct Answer Incorrect Answer
    D 1085 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Selling price = (16n + 240) - (5n + 100) = Rs. (11n + 140)

    Profit = (11n + 140) - (10n + 150) = Rs. (n - 10)

    So, n - 10 = 1,200

    Or, n = 1,210

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